From 76b7d435fdbec8a4b88ac0b01b88e3fb72a829d1 Mon Sep 17 00:00:00 2001
From: Orta <git@orta.io>
Date: Thu, 6 Aug 2020 12:06:10 -0400
Subject: [PATCH 1/2] Add import helpers to the playground config

---
 packages/playground/src/index.ts                     | 8 ++++----
 packages/sandbox/src/compilerOptions.ts              | 2 ++
 packages/tsconfig-reference/scripts/tsconfigRules.ts | 1 -
 packages/typescriptlang-org/tsconfig.json            | 1 +
 4 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/packages/playground/src/index.ts b/packages/playground/src/index.ts
index e60311762b17..51deaa8f951a 100644
--- a/packages/playground/src/index.ts
+++ b/packages/playground/src/index.ts
@@ -386,8 +386,8 @@ export const setupPlayground = (
       } else {
         sidebarTabs.style.display = "none"
         sidebarContent.style.display = "none"
-        settingsContent.style.display = "block";
-        (document.querySelector(".playground-sidebar label") as any).focus()
+        settingsContent.style.display = "block"
+        ;(document.querySelector(".playground-sidebar label") as any).focus()
       }
       settingsToggle.parentElement!.classList.toggle("open")
     }
@@ -462,8 +462,8 @@ export const setupPlayground = (
   }
 
   // Ensure that the editor is full-width when the screen resizes
-  window.addEventListener('resize', () => {
-    sandbox.editor.layout();
+  window.addEventListener("resize", () => {
+    sandbox.editor.layout()
   })
 
   const ui = createUI()
diff --git a/packages/sandbox/src/compilerOptions.ts b/packages/sandbox/src/compilerOptions.ts
index cdd0527b79e5..166ded63539e 100644
--- a/packages/sandbox/src/compilerOptions.ts
+++ b/packages/sandbox/src/compilerOptions.ts
@@ -40,6 +40,8 @@ export function getDefaultSandboxCompilerOptions(config: PlaygroundConfig, monac
     allowJs: config.useJavaScript,
     declaration: true,
 
+    importHelpers: false,
+
     experimentalDecorators: true,
     emitDecoratorMetadata: true,
     moduleResolution: monaco.languages.typescript.ModuleResolutionKind.NodeJs,
diff --git a/packages/tsconfig-reference/scripts/tsconfigRules.ts b/packages/tsconfig-reference/scripts/tsconfigRules.ts
index 521c9c21fc70..ee6887881d7b 100644
--- a/packages/tsconfig-reference/scripts/tsconfigRules.ts
+++ b/packages/tsconfig-reference/scripts/tsconfigRules.ts
@@ -117,7 +117,6 @@ export const defaultsForOptions = {
   inlineSourceMap: "false",
   inlineSources: "false",
   isolatedModules: "false",
-  jsx: '`"react"`',
   jsxFactory: "`React.createElement`",
   keyofStringsOnly: "false",
   listEmittedFiles: "false",
diff --git a/packages/typescriptlang-org/tsconfig.json b/packages/typescriptlang-org/tsconfig.json
index 636824fe9e9e..722b9fe0b1a6 100644
--- a/packages/typescriptlang-org/tsconfig.json
+++ b/packages/typescriptlang-org/tsconfig.json
@@ -7,6 +7,7 @@
     "strict": true,
     "esModuleInterop": true,
     "noEmit": true,
+    "jsx": "react",
     "skipLibCheck": true,
     "noImplicitAny": false,
     "resolveJsonModule": true

From 1b050591230e76c3848ae3fc693d1481789c7a29 Mon Sep 17 00:00:00 2001
From: Orta <git@orta.io>
Date: Thu, 6 Aug 2020 12:10:19 -0400
Subject: [PATCH 2/2] Supress the tslib not found diagnostic

---
 packages/sandbox/src/index.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/sandbox/src/index.ts b/packages/sandbox/src/index.ts
index b2c7dfa3475a..fbb88e8a44c1 100644
--- a/packages/sandbox/src/index.ts
+++ b/packages/sandbox/src/index.ts
@@ -150,7 +150,12 @@ export const createTypeScriptSandbox = (
     ? monaco.languages.typescript.javascriptDefaults
     : monaco.languages.typescript.typescriptDefaults
 
-  defaults.setDiagnosticsOptions({ ...defaults.getDiagnosticsOptions(), noSemanticValidation: false })
+  defaults.setDiagnosticsOptions({
+    ...defaults.getDiagnosticsOptions(),
+    noSemanticValidation: false,
+    // This is when tslib is not found
+    diagnosticCodesToIgnore: [2354],
+  })
 
   // In the future it'd be good to add support for an 'add many files'
   const addLibraryToRuntime = (code: string, path: string) => {